Combined shear, punch, and bending machine.



umes. COMBINED SHEAR, PUNCH, AND BENDING MACHINE.

APPLIGATIDN FILED APE.22, 1909. 942,68Qq, Patented Dec. '7, 1909.

a SHEETS-SHEET 1 anvanfoz 51 01? 727%05 wifnmoeo ANDREW. a. (mum E0,FHOT'O-LITHOGRAFHERS, WASHINGTON, a. c.

S. TAKAG GOMBINED SHEAR, PUNCH, AND BENDING MACHINE.

APPLICATION FILED APR. 22, 1909. I

Patented Dec. 7, 1909.

3 SHEETS-SHEET 2.

c Q'HUZH tor" mnREW. a. swim co. FNOYWLITHDGRAPHERS. WASHINGTON. u. c.

S. TAKAGS. COMBINED SHEAR, PUNCH, AND BBNDING MACHINE.

APPLICATION FILED APR.22, 1909.

Patented Dec. 7, 1909.

3 SHEETS-SHEBT 3'.

W J w W.

avweutoz Wihwooea w n v m a STEFAN TAKACS, OF CHICAGO, ILLINOIS.

COMBINED SHEAR, PUNCH, AND BENIDING MACHINE.

eaaeso.

Specification of Letters Iatent.

Patented Dec. 3', 19879.

Application filed April 22, 1909. Serial No. 491,435.

To all whom it may concern:

Be it known that I, STEFAN TAKAos, a subject of the King of Hungary,residing at Chica o, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in a Combined Shear, Punch,and Bending Machine, of which the following is a specification,reference being had therein to the accompanying drawing.

This invention relates to a combined punch, shear and bending machine,and the object of my invention is to provide a ma chine forexpeditiously and economically shearing, punching and bending sheetmetal bars and rods, thus avoiding the necessity of using separatemachines to perform either operation.

Another object of the invention is to provide a machine of the abovetype with multiple dies, one of the dies being designed to operate theshearing mechanism of the machine, other dies for punching sheet metalor bars, and still other dies for bending rods and bars.

A still further object of the invention is to provide a compact machinethat can be easily operated by hand or motive power to positively shear,punch or bend a piece of material.

Vith the above and other objects in view, which will more readily appearas the invention is better understood, the same con" sists in the novelconstruction combination and arrangement of parts to be presentlydescribed and then claimed.

In the drawings, Figure 1 is a side elevation of the machineillustrating dies or attachments for cutting and shearing angle bars,Fig. 2 is a plan of the same, Fig. 3 is a front elevation of themachine, Fig. l is a cross sectional view of the machine taken on theline X-X of Fig. 2, Fig. 5 is a longitudinal sectional view of themachine, Fig. 6 is a plan of a detached bar cutting die, Fig. 7 is aside elevation of the same, Fig. 8 is a plan of a detached bar cuttingdie adapted to cooperate with the dies shown in Figs. 6 and 7, Fig. 9 isa side elevation of the same, Fig. 10 is a perspective view of adetached shear actuating head, Fig. 11 is a perspective view of thedetached bending die, Fig. 12 is an end view of an attachment for themachine used during the bending operation, Fig. 13 is a plan of adetached male punching die, Fig. 14 is a side elevation of the same,Fig. 15 is a plan of a detached female punch die, Fig. 16 is an end viewof the same, Fig. 17 is a front elevation of the female punch and die,Fig. 18 is a front elevation of a detached shearing member.

In the drawings, 1 designates a bed plate rectangular in plan, saidplate having an extension 2 at the forward edge thereof, while the rearedge is provided with a vertical flange 3 having a central enlargement4-. The bed plate can be supported upon a suitable foundation or in anelevated position by legs or suitable supports 5.

(S designates brackets secured to the bottom of the bed plate 1, at therear edge thereof, and fastened to said brackets, the flange 3 and theenlargement 4 of the bed plate 1 is a vertical shear body 7, having anoverhanging aw 8 providing a throat 9 adapted to receive material to beoperated upon by the shearing mechanism of the machine. The jaw 8 isprovided with a depending longitudinal flange 10 and detachablyconnected to said flange is a shearing knife or mem ber 11.

12 designates a detachable shearing member having a detachable knife 13adapted to cooperate with the knife 11 in shearing sheet metal. Thedetachable member 12 has the sides thereof provided with vertical guideribs 1 1 adapted to slide in vertical grooves 15 provided therefor inthe enlargement 4: of the flange 3, said enlargement being cut away, asat 16, to provide clearance for the member 12. The guide ribs 14; extendbelow the member 12, as best shown in Fig. 18 of the drawings, and areprovided with threaded sockets 17 for screw bolts 18, said boltsextending upward through openings 19 provided therefor in the shear body7. Encircling said screw bolts 18 between the shear body 7 and the heads20 of said bolts are coil springs 21, these springs retaining theshearing member 12 within the enlargement 4 of the flange 3. The lowertransverse edge of the member 12 is provided with a roller socket 22 fora revoluble roller 28, said roller being held in the socket by a plate2st secured to the member 12, said plate having the inner lower edgethereof cut away, as at 25, to provide clearance for the roller 23,while the front lower edge of said plate is recessed, as at 26, tocooperate with a bending die that will be hereinafter considered.

The bed plate 1 is provided with an opening or well 27, and arranged atthe forward edge of the opening 27 is a bearing 28, and

at the rear edge thereof a guide housing 29. In the guide housing isslidably mounted a die holder having the forward end thereof providedwith a vertical dove-tailed tongue 31. Revolubly connected to the rearend of the die holder 30, as at 32, is a shaft 33 having the rear endthereof provided with screw threads 34 adapted to screw in the bearin28.

35 designates a gear wheel mounted upon the shaft 33 adjacent to thescrew threads 34, said gear wheel meshing with an elongated gear wheel36 mounted upon a shaft 37, journaled in bearings 38 and 39, carried bythe extension 2 and the plate 1. The shaft 37 extends beyond theextension 2 of the plate 1 and is provided with a large hand wheel 40having peripheral handles 41 and a crank 42.

The bed plate 1 is provided with a longitudinal slot 43 over which thedie holder is adapted to move and adapted to extend into said slot andbe guided thereby are the depending lugs 44 of dies 45 and 46. The die45 is used for cutting and shearing the bars, particularly an angle bar47 placed upon the bed plate 1. This bar cutting die provided with avertical dove-tailed groove 48 to receive the tongue 31 of the dieholder 30. The side of the cutting die 45 is recessed, as at 49, for aknife 50, which is secured to the die 45 by a screw 51. The knife 50 ispointed to provide tapering cutting edges, as at 52, to conform to theangle of the bar 47.

Cooperating with the die 45 is a die 53 having a depending lug 54adapted to engage in a socket 55 provided therefor in the bed plate 1.The die 53 has the inner end thereof enlar ed and provided with anangular recess 06 to receive and support the bar 47. The end of the die53 is cut away, as at 57, for a detachable knife 58 having a V-shapedcutting edge to accommodate the bar 47. The knives 50 and 58 are adaptedto coiiperate in cutting the bar 47, and in order that said bar can eeasily placed upon the bed plate 1 and firmly hel-d, said bed plate isprovided with certain devices to facilitate the operation of cutting thebar 47.

The first device is a clamping member 59 which is provided with adepending tongue 60 extending through a slot 61 provided therefor in thebed plate 1, the lower end of said tongue having a transverse pin 62 fornormally retaining the clamping member in the bed plate 1. The clampingmember is adjustably held by the rear edge 63 of said member, engagingratchet teeth 64 provided therefor in the top surface of the bed plate 1at each side of the slot 61. The other devices, are revoluble rollers65, journaled in brackets 66 carried by the side edges of the bed plate1 adjacent to the flange 3, said rollers being oppositely disposedwhereby the bar 47 can be easily shifted over the bed plate 1, eitherfor cutting or punching pur poses, as will hereinafter appear.

The die 46 is used for punching bars or sheet metal, and besides havingthe depending lug 44, said die is provided with a detachable punch 67This die is adapted to coiiperate with a female punch 68 detachablymounted in a vertical groove 69 formed in a die block 70. The female die68 is held in engagement with the block 70 by clamps 71, and said femaledie communicates with an opening 72 formed centrally of the block 70,and this opening communicates with a vertical groove 73, whereby slugsor material punched from a sheet or bar can be ejected from the machine.The block 70 is adapted to be attached to the flange 3 by screws orsimilar fastening means (not shown), adapted to extend through slots 74formed in the block 70 and in the openings 75 formed in the flange 3. Inorder that the waste material after passing into the groove 73 can bedischarged from the bed plate 1, said bed plate is provided with avertical opening 76 with which the vertical groove 73 is adapted toregister.

The reference numeral designates a shear actuatii'ig head having therear end thereof provided with a vertical dove-tailed groove 78 toreceive the tongue 31 of the die holder 30. The forward end of the head77 is beveled, as at 79 to ride under the roller and elevate the shearmember 12.

80 designates a bending die provided with .a vertical dove-tailed groove81 to receive the tongue 31 of the die holder 30. This bending die isprovided with a tapering nose 82.

S3 designates an angular member or attachment used during the bendingoperation of the machine, this attachment being shaped to rest upon theforward edges of the flanges 3 and brace a bar or rod that is being bentby the machine.

Operation: hen the die holder 30 is moved toward the flange 3 throughthe medium of the shaft 33, screw threads 34, gear wheels and 36 and thedriven shaft 37, the die holder having attached thereto the shearactuating head 77 will elevate the knife 13 of the member 12 andcofiiperate with the knife 11 to shear a piece of sheet metal which isplaced in the path of the knife 13. Assuming that the. angle bar 47 hasbeen placed in the position shown in F 2 of the drawings and the dieholder should be equipped with the die 45, and the bed plate 1 with thedie 53, the bar 47 will be cut as the die holder 30 is moved forward. Itwill, of course, be understood that a rod or similar piece of metal canbe cut by the dies 45 and 53, when the piece of metal is held againstthe die 53 by the clamp 59.

When it is desired to bend a bar or other material, the die 82 isattached to the die holder 30 and the angle-shaped member 83 placed inengagement with the flange 3, the material is positioned upon the bedplate 1, but the member 88 holds the material away from the flange 3 sothat that portion of the material at one side of said member can be benttoward the plate 24: of the member 12 when the die 82 engages with thesaid portion.

In the shearing operation, the springs 21 beneath the bed plate 1 areadapted to retain the member 12 to its normal position as the shearactuating head passes from beneath the roller 23.

While in the drawings forming part of this application there isillustrated a machine designed for performing different kinds of work bythe use of inter-exchangeable dies, I would have it understood that thestructural elements entering into my invention can be varied or changed,as to the shape, proportion and manner of assemblage without departingfrom the spirit of the invention.

Having now described my invention, what I claim as new, is

1. In a punch, shear and bending machine, a bed plate, a shearing memberconnected to the rear edge of said bed plate, a shearing member movablysupported relative to the first mentioned member and adapted tocooperate therewith, a die holder movably mounted upon said bed plate, ashear actuating head detachably connected to said holder and adapted tomove under the last mentioned shear member for elevating the same, a barcutting die adapted to be connected to said holder, a bar cutting diedetachably mounted upon said bed plate and adapted to cooperate with thedie of said holder for cutting a bar clamped against the last mentioneddie, a die adapted to be connected to said holder for bending a barplaced upon said bed plate, and means for moving said die holder, saidmeans including a screw, gear wheels for revolving said screw, and meansfor revolving said gear wheels.

am mi 2. A machine of the type described, comprising a bed plate, ashearing member connected to said bed plate, a shearing member movablysupported by said plate and adapted to cooperate with the firstmentioned member, a revoluble roller carried by said movable shearingmember, a die holder movably mounted upon said bed plate, a headdetachably connected to said holder and adapted to engage the roller ofsaid movable shear member for elevating the same, means arranged beneathsaid bed plate for normally maintaining said movable shear member in alowered position, a bar cutting die adapted to be detachably connectedto said holder, a punching die adapted to be detachably connected tosaid holder, dies adapted to be detachably mounted upon said bed plateto cooperate with said bar cutting die and said punching die, meanssupported by said bed plate for moving said holder, and means supportedby said bed plate for clamping a piece of work thereon.

3. A machine of the class described com- -prising a bed plate, a feedshaft connected thereto and provided with a screw-threaded end andfurther provided with a gear, a screw bearing for the screw-threadedportion of said shaft, a guide housing, a tool holder mounted in saidguide housing and having one end provided with means for attaching atool thereto and having its other end connected to said shaft, wherebysaid holder will be shifted simultaneously with the longitudinalmovement of the shaft, an operating shaft journaled to said bed plate,means for rotating said shaft and an elongated gear wheel carried by theoperating shaft and meshing with the first-mentioned gear wheel fordriving the same during the longitudinal movement of the feed shaft.

In testimony whereof I afliX my signature in the presence of twowitnesses.

STEFAN TAKAGS.

Witnesses:

VINCENT P. MARELLA, WM. KEMPF.

